Make it possible to use the list in signal-handlers.

[gnulib.git] / lib / alloca_.h

diff --git a/lib/alloca_.h b/lib/alloca_.h
index 799037c..dd0b3e9 100644 (file)
--- a/lib/alloca_.h
+++ b/lib/alloca_.h
@@ -1,6 +1,6 @@
 /* Memory allocation on the stack.
 
-   Copyright (C) 1995, 1999, 2001, 2002, 2003, 2004 Free Software
+   Copyright (C) 1995, 1999, 2001, 2002, 2003, 2004, 2006 Free Software
    Foundation, Inc.
 
    This program is free software; you can redistribute it and/or modify it
@@ -15,7 +15,7 @@
 
    You should have received a copy of the GNU General Public
    License along with this program; if not, write to the Free Software
-   Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
+   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
    USA.  */
 
 /* Avoid using the symbol _ALLOCA_H here, as Bison assumes _ALLOCA_H
@@ -34,19 +34,21 @@
        request, the program just crashes.
  */
 
-#ifdef __GNUC__
-# define alloca __builtin_alloca
-#elif defined _AIX
-# define alloca __alloca
-#elif defined _MSC_VER
-# include <malloc.h>
-# define alloca _alloca
-#else
-# include <stddef.h>
-# ifdef  __cplusplus
+#ifndef alloca
+# ifdef __GNUC__
+#  define alloca __builtin_alloca
+# elif defined _AIX
+#  define alloca __alloca
+# elif defined _MSC_VER
+#  include <malloc.h>
+#  define alloca _alloca
+# else
+#  include <stddef.h>
+#  ifdef  __cplusplus
 extern "C"
-# endif
+#  endif
 void *alloca (size_t);
+# endif
 #endif
 
 #endif /* _GNULIB_ALLOCA_H */